Abstract: Polymers containing a high percentage of vinyl alcohol units are difficult to process into sheet, film, injection-molded objects, or fibers. Such melt-processing is greatly enhanced by admixing certain core/shell copolymers having a rubbery, preferably crosslinked core mainly of units derived from butadiene, and an outer shell mainly of a copolymer of styrene and acrylonitrile. Such copolymers do not require the presence of functional groups capable of reaction with the hydroxyl groups of the poly(vinyl alcohol).
Type:
Grant
Filed:
February 7, 1997
Date of Patent:
May 19, 1998
Assignee:
Rohm and Haas Company
Inventors:
Thierry Christian Claude Diaz, Jean-Philippe Gaetan Meyer, Carlos Alfonso Cruz
Abstract: Polymers containing a high percentage of vinyl alcohol units are difficult to process into sheet, film, injection-molded objects, or fibers. Such melt-processing is greatly enhanced by admixing certain hydrogenated block copolymers formed by sequential anionic polymerization of butadiene and styrene, followed by hydrogenation, then followed by grafting of maleic anhydride.
Type:
Grant
Filed:
February 7, 1997
Date of Patent:
April 28, 1998
Assignee:
Rohm and Haas Company
Inventors:
Thierry Christian Claude Diaz, Jean-Philippe Gaetan Meyer, Carlos Alfonso Cruz
Abstract: The present invention provides a fabric washing composition and aqueous treatment solution for inhibiting dye from transferring from one fabric to the same or different fabric in a fabric washing process. The fabric washing composition and aqueous treatment solution contain at least one dye deposition inhibiting polymer. The dye deposition inhibiting polymer contains, as polymerized units, from 5 to 100 weight percent of at least one vinyl amide monomer and from 0 to 95 weight percent of one or more vinyl ester monomers. The present invention also provides a method for inhibiting the deposition of dye by adding at least one of dye deposition inhibiting polymer useful in the present invention to a fabric washing process where dye may be released.
Type:
Grant
Filed:
July 9, 1996
Date of Patent:
March 24, 1998
Assignee:
Rohm and Haas Company
Inventors:
Thomas Cleveland Kirk, Curtis Schwartz, Richard James Tallent, Thomas Lawrence Pytlewski